Backend Engineer (AI) in London

Backend Engineer (AI) in London

London Full-Time 60000 - 80000 € / year (est.) Home office (partial)
nPlan

At a Glance

  • Tasks: Design and build innovative AI solutions for the construction industry.
  • Company: Join nPlan, a pioneering tech company transforming construction with AI.
  • Benefits: Flexible work environment, generous holiday policy, and fantastic health benefits.
  • Other info: Collaborative culture that values diverse backgrounds and encourages personal growth.
  • Why this job: Make a real impact in a rapidly evolving industry while growing your skills.
  • Qualifications: 3+ years in backend development, strong SQL, and experience with production systems.

The predicted salary is between 60000 - 80000 € per year.

Ready to reshape one of the world’s largest industries? nPlan has built a unique AI platform that helps some of the largest construction companies understand, manage, and reduce the risk in some of the world’s largest impactful construction projects. Join our Product Engineering team to design, implement, and ship high-impact AI solutions that help the world build better.

The backend team owns the systems that power our platform. You will design, implement, and build new capabilities that are performant, dependable, and extensible. These capabilities range from basic CRUD and APIs to cutting‑edge Agentic AI systems powered by a wide range of frontier AI models.

What you’ll do

  • Design, build, and deploy new backend capabilities: our customers are always asking for more, and especially more sophisticated AI systems. Help us stay on the cutting edge.
  • Lead technical delivery: propose designs, evaluate trade‑offs, drive changes from design to deployment. Don’t be afraid to point out where we can and should be better.
  • Improve operations: observability, incident response, performance, scaling, automation. We hate finding and dealing with bugs. You should too.

Our stack

  • Languages: Python, Go, Typescript
  • APIs: GQL, gRPC, REST
  • Databases: Postgresql, Vector DBs, BigQuery, blob storage
  • Async: Vertex AI, GCP pub/sub
  • Deployment: GCP, Kubernetes, ArgoCD, Github Actions
  • Operations: Prometheus, Grafana, Sentry

What we’re looking for

  • Startup mentality: we are changing the world, and what is required can be ambiguous yet we need to deliver fast and reliably.
  • Experience of production systems: at least 3 years of experience building scalable production systems. Experience using Kubernetes in a cloud environment.
  • Solid system design fundamentals: you know how to design a reliable, testable and scalable system from scratch.
  • Strong SQL: data models, indexing, production‑level migrations, performance scaling.
  • A testing mindset: we always strive to be better at this so would be particularly keen who brings this to the team.
  • Practical security awareness: you understand attack surfaces, common vulnerabilities. Ideal if you have experience of SOC or ISO accredited companies.
  • Using the latest technologies to iterate fast: using coding agents and similar technologies to get stuff done fast.
  • Strong code review habits: This skill is an important quality gate for pushing to production and is becoming even more so with the rise of coding agents.

You might be our person if you…

  • Build reliable backend systems: You’ve designed, shipped, and operated production services and APIs that real users depend on.
  • Think in distributed systems: You’re comfortable with queues, retries, idempotency, consistency trade‑offs, and failure modes.
  • Care about operability: You set a high bar for observability (logs/metrics/traces), on‑call readiness, incident response, and performance tuning.
  • Model and work with data: You write strong SQL and understand indexing, migrations, data modelling, and referential integrity.
  • Code with confidence: You build clean, well‑tested services (unit/integration tests) and can work effectively in a modern backend stack (e.g., Python, Go, Typescript).
  • Thrive in autonomy: You enjoy taking ambiguous problems, clarifying requirements, and driving work to a shippable solution.

Remember to mention “crane” in your application — we’re looking for people who pay attention to details.

What working at nPlan will be like

We are still a relatively small team, so there is plenty of opportunity for a high degree of ownership and growth over different areas of the product, and you will be directly exposed to all areas of the business. Your voice will always be heard. What you do or say counts, not who you are or where you’re from. We are a cross-disciplinary team, and come from all backgrounds and cultures.

We have three core values that underlie everything we do:

  • Learn from Everything
  • Be Radically Truthful
  • Aim High, Run Fast.

These enable us to create a collaborative, inclusive environment where we can move effectively and efficiently to implement the best solutions.

Fantastic benefits package for Health & Wellbeing, Learning & Development, family leave, and more. Having time to yourself and a private life is important. We offer a very flexible work environment and a generous holiday policy.

We are working hard to create a workplace that is inclusive to everyone, no matter their background, or where they are in life. We believe that only a truly diverse place can create great products that serve a wide audience and improve the world. We believe in equality of opportunities and that's why we make sure that these ideas are reflected in our values, and that we really apply these in all aspects of our company culture. If you have a need for any adjustments during our interview process, let us know and we will do our best to accommodate them.

Hiring process

  • Intro call (Recruiter) (15min)
  • Skill Set interview (Engineering Manager) (15‑30min)
  • Practical exercise (Engineering Manager & Backend Engineer) (60 min)
  • Values Alignment call (60min)
  • On‑site (half a day, can be remote)

If this sounds like you, we’d love to hear from you!

Backend Engineer (AI) in London employer: nPlan

At nPlan, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a Backend Engineer, you'll have the opportunity to take ownership of impactful projects while benefiting from a flexible work environment, generous holiday policy, and a strong commitment to employee growth and inclusivity. Join us in reshaping the construction industry with cutting-edge AI solutions, where your voice matters and your contributions are valued.

nPlan

Contact Detail:

nPlan Recruiting Team

StudySmarter Expert Advice🤫

We think this is how you could land Backend Engineer (AI) in London

Tip Number 1

Get your networking game on! Connect with folks in the industry, attend meetups, and don’t be shy about reaching out on LinkedIn. You never know who might have a lead on that perfect Backend Engineer role.

Tip Number 2

Show off your skills! Build a portfolio of projects that highlight your backend capabilities, especially those using Python, Go, or Typescript. Share them on GitHub and make sure to link them in your applications.

Tip Number 3

Prepare for those interviews like a pro! Brush up on system design fundamentals and be ready to discuss your experience with scalable production systems. Practice coding challenges to keep your skills sharp.

Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team at nPlan.

We think you need these skills to ace Backend Engineer (AI) in London

Python
Go
Typescript
API Design (GQL, gRPC, REST)
PostgreSQL
Vector DBs
BigQuery

Some tips for your application 🫡

Show Off Your Skills:When you're writing your application, make sure to highlight your backend engineering skills. Talk about the systems you've built and how they’ve made a difference. We want to see your experience with Python, Go, or Typescript shine through!

Be Detail-Oriented:Remember to mention 'crane' in your application! This little detail shows us that you pay attention to the finer points. It’s a small touch that can make a big impact.

Keep It Relevant:Tailor your application to the role. Focus on your experience with scalable production systems and your understanding of distributed systems. We love seeing how your background aligns with what we’re looking for!

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from us!

How to prepare for a job interview at nPlan

Know Your Tech Stack

Familiarise yourself with the technologies mentioned in the job description, like Python, Go, and Typescript. Be ready to discuss your experience with these languages and how you've used them in past projects.

Showcase Your Problem-Solving Skills

Prepare examples of how you've tackled ambiguous problems in previous roles. Highlight your ability to clarify requirements and drive work to a shippable solution, as this aligns with the startup mentality they’re looking for.

Demonstrate Your Testing Mindset

Be prepared to talk about your approach to testing and quality assurance. Share specific instances where you implemented unit or integration tests to ensure reliability in production systems.

Pay Attention to Details

Remember to mention 'crane' in your application and during the interview. This shows that you can follow instructions and pay attention to details, which is crucial for the role.